Your Windows computer isn't working right and you need to narrow down the problem. Here's how to boot up in Safe Mode and do ...

Turn off your PC instead of restarting it. Disconnect the power cord. If it is a laptop, disconnect its charger and remove its battery (if removable). Press and hold the power button for up to 45 ...

Holding down the shift key while turning a Mac on will boot it into Safe Mode. Here's how to start a Mac in Safe Mode and use it to diagnose issues.